US6007574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stent
Assignee: Endovascular Technologies Inc
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Filing: 1994-12-23
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Granted: 1999-12-28
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Expires: 2014-12-23
Abstract
Abstract A stent shaped as a three-dimensional body which is formed by interlaced threads (1) arranged in multistart turns of a helical line. The threads (1) are arranged in at least two groups (2 and 3) of the helical turns featuring opposite senses of helix. The stent ends are established by sections (5) where the turns of one helical line merge into those of the other helical line, said sections appearing as a single length of the thread (1).
Inventors
- 👤 Sergei Appolonovich Pulnev
- 👤 Andrei Vladimirovich Karev
- 👤 Sergei Vladimirovich Schukin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:48
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61B; A61B17/00; A61B17/0057; A61B17/12; A61B17/12022; A61B17/12099; A61B17/12109; A61B17/12113; A61B17/12118; A61B2017/00575; A61B2017/00592; A61B2017/00606; A61B2017/00831; A61B2017/00867; A61F2/01; A61F2002/823; Y; Y10; Y10S; Y10S623/00; Y10S623/901
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
232 words
A stent shaped as a three-dimensional body having first and second ends and a side surface disposed between the first and second ends, the side surface being formed by two groups (2, 3) of elongated elements (1), each of elongated elements (1) being formed from an elastic thread extending in a helical configuration along a longitudinal axis of the said body, the elements of the first group having a common first direction of winding and the elements of the second group having a common second direction of winding opposite to the first direction, wherein: the elongated elements (1) of the first and second groups (2, 3) are axially displaced from the elongated elements of the same group; the elongated elements of the first group (2) are interwoven with the elongated elements of the second group (3) intermediate the first and second ends of the body; each elongated element from at least one selected subgroup of the first group (2) and/or the second group is made of the same thread as at least one other elongated element; and each portion of the thread for connecting elements made of the same thread is formed as a curvilinear segment (5) having a length substantially less than a length of the body between the first and second ends and a shape and orientation substantially different from shape and orientation of any of the elongated elements (1).
Claim 2
Dependent Claim
232 words
A stent shaped as a three-dimensional body having first and second ends and a side surface disposed between the first and second ends, the side surface being formed by two groups (2, 3) of elongated elements (1), each of elongated elements (1) being formed from an elastic thread extending in a helical configuration along a longitudinal axis of the said body, the elements of the first group having a common first direction of winding and the elements of the second group having a common second direction of winding opposite to the first direction, wherein: the elongated elements (1) of the first and second groups (2, 3) are axially displaced from the elongated elements of the same group; the elongated elements of the first group (2) are interwoven with the elongated elements of the second group (3) intermediate the first and second ends of the body; each elongated element from at least one selected subgroup of the first group (2) and/or the second group is made of the same thread as at least one other elongated element; and each portion of the thread for connecting elements made of the same thread is formed as a curvilinear segment (5) having a length substantially less than a length of the body between the first and second ends and a shape and orientation substantially different from shape and orientation of any of the elongated elements (1).
Claim 3
Dependent Claim
19 words
The stent as set forth in claim 1, wherein all elongated elements are made of a single thread (1).
Claim 4
Dependent Claim
23 words
The stent as set forth in claim 1, wherein the elongated elements (1) have variable pitch along the length of the three-dimensional body.
Claim 5
Dependent Claim
25 words
The stent as set forth in claim 1, wherein the three-dimensional body has a variable diameter along its length between the first and second ends.
Claim 6
Dependent Claim
116 words
The stent as set forth in claim 1, wherein a portion (8) of the side surface is provided with third and fourth groups of the elongated elements, the elongated elements of the third and the fourth groups being formed by an elastic thread and extending in a helical configuration along a longitudinal axis of the body, wherein: the elements of the third group have the common first direction of winding, are axially displaced from each other and interwoven with the elongated elements of the second group; and the elements of the fourth group have the common second direction of winding, are axially displaced from each other and interwoven with the elongated elements of the second group.
Claim 7
Dependent Claim
40 words
The stent as set forth in claim 1, wherein free ends (4) of each of the threads forming the elongated elements of the selected subgroup are interlaced with at least one of the elongated elements (1), and/or with each other.
Claim 8
Dependent Claim
38 words
The stent as set forth in claim 1, wherein one elongated element of each pair of the elongated elements made of the same thread belongs to the first group, and another elongated element belongs to the second group.
Claim 9
Dependent Claim
43 words
The stent as set forth in claim 1, wherein at least a part of the curvilinear segments (5) at each end of the three-dimensional body are bent at different angles outwards from a plane parallel to the longitudinal axis of the three-dimensional body.
Claim 10
Dependent Claim
22 words
The stent as set forth in claim 1, wherein the threads forming the elongated elements (1) are made of a superelastic material.
Claim 11
Dependent Claim
23 words
The stent as set forth in claim 2, wherein the elongated elements (1) have variable pitch along the length of the three-dimensional body.
Claim 12
Dependent Claim
25 words
The stent as set forth in claim 2, wherein the three-dimensional body has a variable diameter along its length between the first and second ends.
Claim 13
Dependent Claim
115 words
The stent as set forth in claim 2, wherein a portion (8) of the side surface is provided with third and fourth groups of the elongated elements, the elongated elements of the third and the fourth groups being formed by elastic threads and extending in a helical configuration along a longitudinal axis of the body, wherein: the elements of the third group have the common first direction of winding, are axially displaced from each other and interwoven with the elongated elements of the second group; and the elements of the fourth group have the common second direction of winding, are axially displaced from each other and interwoven with the elongated elements of the second group.
Claim 14
Dependent Claim
39 words
The stent as set forth in claim 2, wherein one elongated element of each pair of the elongated elements joined by the curvilinear segment (5) belongs to the first group, and another elongated element belongs to the second group.
Claim 15
Dependent Claim
43 words
The stent as set forth in claim 2, wherein at least a part of the curvilinear segments (5) at each end of the three-dimensional body are bent at different angles outwards from a plane parallel to the longitudinal axis of the three-dimensional body.
Claim 16
Dependent Claim
22 words
The stent as set forth in claim 2, wherein the thread forming the elongated elements (1) is made of a superelastic material.
Claim 17
Dependent Claim
40 words
The stent as set forth in claim 3, wherein free ends (4) of each of the threads forming the elongated elements of the selected subgroup are interlaced with at least one of the elongated elements (1), and/or with each other.
Claim 18
Dependent Claim
25 words
The stent as set forth in claim 3, wherein the three-dimensional body has a variable diameter along its length between the first and second ends.
Claim 19
Dependent Claim
38 words
The stent as set forth in claim 3, wherein one elongated element of each pair of the elongated elements made of the same thread belongs to the first group, and another elongated element belongs to the second group.
Claim 20
Dependent Claim
43 words
The stent as set forth in claim 3, wherein at least a part of the curvilinear segments (5) at each end of the three-dimensional body are bent at different angles outwards from a plane parallel to the longitudinal axis of the three-dimensional body.
Claim 21
Dependent Claim
22 words
The stent as set forth in claim 3, wherein the threads forming the elongated elements (1) are made of a superelastic material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-12-27 | 2003-06-28 | 2003-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-27 | 2007-06-28 | 2007-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-27 | 2011-06-28 | 2011-12-28 | $7700.00 | Window Closed / Lapsed |